Originally Posted by Dan Ensor
I'm interested to hear your defense of that statement. The "On Axis" is determined by your body and the disc. You could throw a disc in space, and it would still have an axis it's being moved about. That axis has a pole, just like earth, which is the point where the lever's edge juxtaposed to the disc is connected to the body.
it's the axis of disc rotation, no? So, the axis in question is perp to the disc, through the center of the disc. Torque is force applied in a circular motion perpendicular to an axis.
So off-axis torque means that part of the rotational force you put on the disc is NOT perpendicular to the axis of the disc, regardless of how your body's leaning.
If this isn't right, then I'm banning myself from this thread, to avoid confusion.